Quarterly report pursuant to Section 13 or 15(d)

Segment Reporting (Details)

v2.4.1.9
Segment Reporting (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 28, 2015
Mar. 29, 2014
Dec. 27, 2014
Net sales      
Net sales $ 54,386us-gaap_Revenues $ 56,809us-gaap_Revenues  
Total assets      
Total assets 230,154us-gaap_Assets   222,764us-gaap_Assets
Long-lived assets      
Long-lived assets 86,402us-gaap_NoncurrentAssets   87,217us-gaap_NoncurrentAssets
Americas [Member]      
Net sales      
Net sales 25,889us-gaap_Revenues
/ us-gaap_StatementGeographicalAxis
= us-gaap_AmericasMember
25,583us-gaap_Revenues
/ us-gaap_StatementGeographicalAxis
= us-gaap_AmericasMember
 
Total assets      
Total assets 154,038us-gaap_Assets
/ us-gaap_StatementGeographicalAxis
= us-gaap_AmericasMember
  145,816us-gaap_Assets
/ us-gaap_StatementGeographicalAxis
= us-gaap_AmericasMember
Long-lived assets      
Long-lived assets 73,277us-gaap_NoncurrentAssets
/ us-gaap_StatementGeographicalAxis
= us-gaap_AmericasMember
  73,315us-gaap_NoncurrentAssets
/ us-gaap_StatementGeographicalAxis
= us-gaap_AmericasMember
EMEA [Member]      
Net sales      
Net sales 16,613us-gaap_Revenues
/ us-gaap_StatementGeographicalAxis
= us-gaap_EMEAMember
18,149us-gaap_Revenues
/ us-gaap_StatementGeographicalAxis
= us-gaap_EMEAMember
 
Total assets      
Total assets 58,220us-gaap_Assets
/ us-gaap_StatementGeographicalAxis
= us-gaap_EMEAMember
  59,439us-gaap_Assets
/ us-gaap_StatementGeographicalAxis
= us-gaap_EMEAMember
Long-lived assets      
Long-lived assets 8,512us-gaap_NoncurrentAssets
/ us-gaap_StatementGeographicalAxis
= us-gaap_EMEAMember
  9,233us-gaap_NoncurrentAssets
/ us-gaap_StatementGeographicalAxis
= us-gaap_EMEAMember
Asia/Pacific [Member]      
Net sales      
Net sales 11,884us-gaap_Revenues
/ us-gaap_StatementGeographicalAxis
= us-gaap_AsiaPacificMember
13,077us-gaap_Revenues
/ us-gaap_StatementGeographicalAxis
= us-gaap_AsiaPacificMember
 
Total assets      
Total assets 17,896us-gaap_Assets
/ us-gaap_StatementGeographicalAxis
= us-gaap_AsiaPacificMember
  17,509us-gaap_Assets
/ us-gaap_StatementGeographicalAxis
= us-gaap_AsiaPacificMember
Long-lived assets      
Long-lived assets $ 4,613us-gaap_NoncurrentAssets
/ us-gaap_StatementGeographicalAxis
= us-gaap_AsiaPacificMember
  $ 4,669us-gaap_NoncurrentAssets
/ us-gaap_StatementGeographicalAxis
= us-gaap_AsiaPacificMember